Chain offer marketing idea for windows phone and xbox one

I just had this idea, xbox is ought to get heavyweight competition from ps4 when released same as wp phone with next line up of galaxy and iPhone.
so here is a marketing idea.
Step-1
on purchas of a xbox give one discount coupon of $20 on every windows phone. So the buyer would be urged to buy a wp phone. If not he will not let it go wast and might gift it to someone else who might be urged to buy wp phone due to discount.

Step-2
on purchas of a wp phone give one discount coupon of $20 on every xbox. So the buyer would be urged to buy a xbox. If not he will not let it go wast and might gift it to someone else who might be urged to buy xbox due to discount.

so here is the chain. Let suppose you buy a xbox. You get a coupon for wp phone, you buy it,you again get a coupon for Xbox you might buy it or give to some one else, in both case a xbox is bought ,giving another coupon for windows phone.
so the cycle continuous endlessly.

I can't tell you how many coupons I've recieved with items and thrown them all away without considering giving them to someone else. It may not be a bad idea, but I doubt it would do much for either WP8 or the X1.